5 speed auto

[p0opstlnksal0t]

I think the real benefits here would be The ability to get upgraded clutch packs. The ability to get a billet converter. That 3.50 first gear! A slight overdrive and a more efficient means of getting power to the wheels. I wonder what a built 750 could handle compared to a 343 with valve body?

 

[OGBeno]

I think the real benefits here would be The ability to get upgraded clutch packs. The ability to get a billet converter. That 3.50 first gear! A slight overdrive and a more efficient means of getting power to the wheels. I wonder what a built 750 could handle compared to a 343 with valve body?

Read the SAE White Paper that Ryan posted. It has the torque comparisons.

 

[scottryana]

I even posted a dirty calculation that if the stock A343 is rated for 330ft/lbs and if you believe the claims of 2x for shift kit that gets you to 660 which I believe as I am around 600ft/lbs. That puts the A750 over 700.

 

[FloridaCruiser813]

Let's make this 5 speed auto conversion happen. I can contribute $5 towards the cause !

 

[scottryana]

Just to revive this thread, I was looking through the transtar torque converter catalog tonight and they show the A343F and A750F as being identical In critical dimensions, ie diameter, bolt circle diameter, bolt pitch, spline size and count and depth. Looks to be a direct bolt on physically. that 5 speed sure would be sweet. Lol.

Oh I also found new Alto performance red friction clutches and performance steels for both transmissions. I think if you wanted to hold more power both could be beefed up a little with new clutches, steels, and valve body work. Next step would be sending out the shafts and gears to be cryo treated or made from 300m lol

 

[94SRUNNER]

A 5-speed would be awesome!

 

[scottryana]

Good info!

http://www.jpat.co.uk/78 Toyota 1B A340 etc.pdf

http://www.jpat.co.uk/86 Toyota 3D A750 & A761.pdf

There looks to be 15 different bell housings for the A340 series of transmissions. While only 3 for the A750. Really just need to find out if the bolt patterns on the trans are the same and the Bell housings should be easy to swap.

 

[Dragos80]

subscribed

 

[cjmoon]

Bringing this back. i just can't stop thinking about it total control deep first high OD rail pressure control for boost compensation, PWM solenoids. the things dreams are made of.... my 1st gear shift is harsh if i hold it to long. my programming short shifts 1st and lets the converter work in second it can't be good on it, but i know the 1st t o2nd seems to be one of the weak points of the 34X series trans so maybe it transfers the stress to the converter.

hf2A difference fj80 vs fj100??? i am talking to the gentleman with a 2004 trans and tranfercase on the classifieds. the transfer case flange to flange is 18" mine is 21.5. is the HF2AV physically (im not starting the difference in Viscous vs not, just physical measurement interchangeability) different. it's been reported they are interchangeable, can i get a second? only real knowledge not web wheeling i saw s***. getting ready to spend some money as no one has seemed to put the parts side by side to compare that i have found. i need to start a go fund me page to help in the efforts. the physical install is only one thing the programming and wiring will be just as challenge.

trans length is 3/4" difference as reported but the bell housing is 3/4" shorter also. measurements put the front flange in the same spot but the rear output actually 3" shorter this is comparing 1996 to 2004 land cruisers yard stick in vehicle measurements rounded numbers.

really thinking about puling the trigger to get some good side by side measurements to either feed the need or put this dream to bed. only money right.

 

[scottryana]

The TC's do exchange, I mixed and matched my 55 drivetrain based on what was the latest year available. The 100 series TC bolted right up to the 80 series trans.

 

[cjmoon]

HF2A vs HF2AV fzj80 vs 100: awesome i was thinking i remembered you doing that. so the question remains are the lengths different? do i need to do drive shaft changes? is the VC version longer to account for the extra equipment.

 

[dirtyboots]

Nothing to contribute other than the thought of running a 1HDT with 750 expressed through dog face. Where is the thread where someone has
already done this, as any possible idea or combination has been discussed in a thread? Search packing bearings with paw paw seeds and it's been done. I digress.

 

[tomcat]

Why are we waiting ? I to will donate $5 to the cause

 

[scottryana]

Sorry I can't speak to the length since I had all custom drive shafts made. :-/

HF2A vs HF2AV fzj80 vs 100: awesome i was thinking i remembered you doing that. so the question remains are the lengths different? do i need to do drive shaft changes? is the VC version longer to account for the extra equipment.

 

[cjmoon]

The TC's do exchange, I mixed and matched my 55 drivetrain based on what was the latest year available. The 100 series TC bolted right up to the 80 series trans.

What year 100?

 

[scottryana]

2004

 

[cjmoon]

so the transfer case mounting is the same and based on my measurements and the pictures below the HF2AV is about 3-3.5" longer due to the VC the front flange appears to be in the same location +/-.5" with rough measurements

 

[Dragos80]

Apologies in advance if the V8 engine has been discussed in terms of a swap.

Thinking about the A750 tranny swap on an 80, since many people also want to repower their cars, would a complete powertrain swap be a better option (not cheaper of course).
Is the 4.7 V8 throttle by cable or by wire?

 

[scottryana]

Depends on what year. Before 2003 they were cable, after 2004 they were drive by wire.

Are you asking if a 2UZ and associated auto is a better engine for the 80? I suppose it really depends on what you are looking for. Regardless if you are going to swap an engine in you should rebuild it, the 2UZ is a little more to rebuild than a 1FE. The 1FE will have a little less power but easier to work on, etc.

Many sides to this coin.

Apologies in advance if the V8 engine has been discussed in terms of a swap.

Thinking about the A750 tranny swap on an 80, since many people also want to repower their cars, would a complete powertrain swap be a better option (not cheaper of course).
Is the 4.7 V8 throttle by cable or by wire?

 

[Dragos80]

As the power on the 4.5 is less than desirable, I was thinking swapping both the engine and tranny would be a better choice. Apparently the VVT-i model has more power and torque.

Would it be a real big headache to fit the throttle-by-wire setup on the 80 series?

Looking at everything involved in this "dream" swap I wonder it it would a better choice to swap the front axle on a 100.
It all seems too complicated, which would translate into $$$$$